“Keep in mind that he is a brilliant marketer and provocateur.”

Feeding into the fantasies of anyone who’s ever had to trek from New York City to Washington, DC using one of the godawful slow or expensive modes of transportation available, Elon Musk tweeted a compelling and vague announcement about his plans for the Mid-Atlantic.

Musk tweeted Thursday that he received “verbal govt approval” for an underground hyperloop connecting New York City, Philadelphia, Baltimore and Washington, DC. But experts tell me this means, essentially, nothing.